2018.11 / m
19
Electric Power Generation
Installation and maintenance
LSA 40
Low Voltage Alternators - 4 pole
4455 en -
Field excitation current i exc (A)
400V - 50 Hz
“i exc”: excitation current of the exciter field
Type
No load
At rated load
VS1
1.2
3.2
VS2
1.1
3.2
S3
1.1
3.2
S4
1.1
3.1
M5
1.1
3
For 60 Hz operation, the resistance values
are the same and the excitation current “i
exc” is approximately 5 to 10% weaker.
• Dedicated single-phase: 4-pole,
SHUNT excitation
Resistances at 20 °C (Ω)
Type
L/N stator Rotor Field coil Armature
VS1
0.3
3
12.5
1.4
VS2
0.22
3.3
12.5
1.4
S3
0.19
3.5
12.5
1.4
S4
0.16
3.8
12.5
1.4
M5
0.13
4.3
12.5
1.4
Field excitation current i exc (A)
230V - 50 Hz
“i exc”: excitation current of the exciter field
Type
No load
At rated load
VS1
1.2
3.2
VS2
1.1
3.2
S3
1.1
3.2
S4
1.1
3.1
M5
1.1
3
For 60 Hz operation, the resistance values
are the same and the excitation current “i
exc” is approximately 5 to 10% weaker.
• Table of weights
(values given for information only)
Type
Total weight (kg)
Rotor (kg)
VS1
85
30
VS2
90
30
S3
100
35
S4
105
35
M5
110
40
After operational testing, it is essential to
replace all access panels or covers.
